Thank you for viewing. I opened it for listing, but it is new and unused. 【Product Description】 Size: M10 x 20mm Rod Length (Under Head): 20mm; Pitch: 1.5mm; Flange Diameter: 22.3 mm; Hex Width: 15mm; Hex Thickness: 9.2mm Material: Made of 10.9 grade carbon steel, Black oxide coating finish, high strength, wear resistance, and corrosion resistance. Application: Widely used in assembly and fixing for home assembly and maintenance, machine tools, construction, DIY projects, guardrails, home appliances, pipeline installation, equipment, steel frame houses, etc. Design: There is a circular serrated flange under the head of the flange bolt, which functions as a gasket, distributing the load and preventing loosening. Installation: A wrench is required for installation. Generally, a hex nut is used to form a fastener device (not included in the package). It can also be used alone with components with screw holes. Material: Carbon steel Grade: Grade 10.9 Thread Size: M10 Exterior Finish: Black oxide Fastener Type: Flange bolt --- uxcell Hex Serrated Flange Bolt Hex Flange Bolt M10x20mm 10.9 Grade Carbon Steel Screws, Pack of 10 ◎Please purchase with the understanding that this is a home-stored item. Please refrain from purchasing if you are a nervous person who is concerned about minor details or if you are looking for a perfect product. I have many other items for sale♪ ↓Bulk discount is also welcome #muchikaitemsTools #muchikaitems